摘要
通过蓝白斑筛选技术从太湖底泥中筛选出11株聚磷菌,进一步筛选出一株高效聚磷菌,命名为G19。经过生理生化分析初步鉴定G19为李斯特氏菌属。研究表明,G19能够在废水合成培养基中较好生长,在TP初始浓度为0.33mg/L,温度为25℃下,经过两天生长,废水合成培养基中TP下降到0.08 mg/L,除磷率高达到75.8%。实验采用自制环形水槽,当水流扰动时形成主流区和回流区,研究G19在主流区和回流区对水体中磷的去除作用,实验表明在回流区存在紊动强度较大时,高效聚磷菌除磷作用明显。试验结果对污水处理及湖泊富营养化治理具有指导意义。
With the blue-white screening method, 11 phosphate accumulating organisms （PAOs） have been screened from the sediment of Taihu Lake and screened a high-efficiency phosphorus-accumulating organism named G19. Individual bacterium modality, physiological and chemical characters primarily indicated that it belong to Listeria spp. The strain has a high phosphorus removal capacity, the approximate growth condition of the strain at 25 ℃ in wastewater synthetic medium. At last, practical application of the strain in the treatment showed that the removal rates were respectively over 75.8% , which concentration of TP decreased from 0. 33mg/L to 0. 08 mg/L. Using the annular flume , it was investigated that the removal of TP in main flow area and the recirculation zone are different. The results show that the higher the turbulent intensity,the better removal of TP. The result is great value for sewage treatment and eutrophication control.
出处
《科学技术与工程》
北大核心
2013年第8期2307-2312,共6页
Science Technology and Engineering
基金
国家重点研究发展计划(973)(2008CB418203)资助
关键词
蓝白斑筛选
高效聚磷菌
环形水槽
水动力条件
blue-white screening method flume hydrodynamic conditions high-efficiency phosphorus-accumulating organisms annular
